PIRSA:18090048 Scientific Series Quantum Gravity

DOI10.48660/18090048

Series: Quantum Gravity

Shyam, V. (2018). Holography at finite radius. Perimeter Institute. https://pirsa.org/18090048

Shyam, Vasudev. Holography at finite radius. Perimeter Institute, Sep. 20, 2018, https://pirsa.org/18090048 

@misc{ pirsa_PIRSA:18090048,
  doi = {10.48660/18090048},
  url = {https://pirsa.org/18090048},
  author = {Shyam, Vasudev},
  keywords = {Quantum Gravity},
  language = {en},
  title = {Holography at finite radius},
  publisher = {Perimeter Institute},
  year = {2018},
  month = {sep},
  note = {PIRSA:18090048 see, \url{https://pirsa.org}}
}

Abstract

I will discuss certain irrelevant operator deformations of holographic conformal field theories that define a one parameter family of quantum field theories which are thought to be dual to quantum gravity in finite regions. 
Some examples include the "$T\bar{T}$ deformation of two dimensional holographic CFTs, its generalisations and higher dimensional cousins.
I will emphasise the key role played by emergent radial diffeomorphism invariance in this scenario. In particular, I will present an additional criterion for a theory, in the appropriate regime, to possess a dual description in terms of general relativity coupled to matter in one higher dimension. I will also discuss entanglement properties of such theories, and in a particular example, I will show how the holographic entanglement entropy conjectures still hold in the finite radius setting. This is based on the following work: arXiv:1707.08118 [hep-th], arXiv:1712.07955 [hep-th], arXiv:1806.07444 [hep-th] and arXiv:1808.07760 [hep-th]."

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